Marie Read / Western Grebe (Aechmorphus occidentalis), pair during 'rushing' courtship display in which they run across water's surface in synchrony, near Escondido, California, USA, January.

Marie Read / Wood Ducks (Aix sponsa), females behave aggressively toward a male (second from right) that is trying to join them on a floating log, autumn, New York, USA, October.

Marie Read / American avocets (Recurvirostra americana) two during aggressive (territorial) encounter, Bear River Migratory Bird Refuge, Utah, USA, May.

Ingo Arndt / Thick billed ravens interacting {Corvus crassirostris} Simien NP, Ethiopia, East Africa

Laurent Geslin / Rock dove / Feral pigeon (Columba livia) pair interacting, London, UK

Laurent Geslin / Rock dove / Feral pigeon (Columba livia) pair interacting, London, UK

Carol Walker / Two white horses of the Camargue, interacting, greeting head to head in marshes, Camargue, Southern France

Erlend Haarberg / Two Norway lemmings (Lemmus lemmus) interacting on spring snow, Vauldalen, Norway, April

Carol Walker / Mustang / wild horse, cremello colt foal Cremesso interacting with yearling filly, McCullough Peak herd, Wyoming, USA, August 2007

Terry Whittaker / 2020VISION / Konik horse (Equus caballus) herd grazing with two stallions interacting, Wicken Fen, Cambridgeshire, UK, June 2011

Terry Whittaker / 2020VISION / Konik horse (Equus caballus) pair interacting, wild herd in rewilding project, Wicken Fen, Cambridgeshire, UK, June 2011

Carol Walker / Mustangs / wild horses, two cremello colts Claro and Cremosso interacting, mutual grooming, McCullough Peaks herd, Wyoming, USA, August 2007

Edwin Giesbers / Two Konik Wild Horse (Equus ferus caballus) interacting. The Netherlands, November.

Edwin Giesbers / Kittiwake (Rissa tridactyla) pair interacting, Farne Islands, Northumberland, UK, June

Jeff Rotman / Snorkelers interacting with wild Bottlenose Dolphin (Tursiops truncatus), Nuweiba, Egypt, Red Sea. Model released Model released.

Jeff Rotman / Dolphin trainer interacting with Bottlenose Dolphin (Tursiops truncatus), Dolphin Reef, Eilat, Israel - Red Sea. Model released.

Wild Wonders of Europe / Cairns / Two Polar bears (Ursus maritimus) interacting, Svalbard, Norway, September 2009

Wild Wonders of Europe / Hamblin / Konik horse and young foal interacting, Oostvaardersplassen, Netherland, June 2009

Wild Wonders of Europe / Liodden / Two Svalbard reindeer (Rangifer tarandus platyrhynchus) interacting, Spitsbergen, Svalbard, March 2009

Wild Wonders of Europe / Widstrand / European grey wolf (Canis lupus) carrying prey interacting with a European Brown bear (Ursus arctos) Kuhmo, Finland, July 2009

Wild Wonders of Europe / Widstra / European grey wolf (Canis lupus) interacting with a European brown bear (Ursus arctos) Kuhmo, Finland, July 2009. WWE INDOOR EXHIBITION

Jeff Rotman / Snorkeler interacting with wild Bottlenose Dolphin (Tursiops truncatus), Nuweiba, Egypt - Red Sea. Model released Model released.

Jeff Rotman / Snorkeler interacting with wild Bottlenose Dolphin (Tursiops truncatus), Nuweiba, Egypt - Red Sea. Model released Model released.

Andy Rouse / Asian elephant (Elaphus maximus) subadult and calf interacting, probably siblings, Minneria NP, Sri Lanka

Andy Rouse / Asian elephant (Elaphus maximus) two interacting, captive, Pinnawala Elephant Orphanage, Sri Lanka

Jose B. Ruiz / Common sparrows (Passer domesticus) interacting near water, Alicante, Spain

Marie Read / Crested caracaras (Caracara cheriway), midair aggressive interaction between two for access to perch, Martin Refuge, Rio Grande Valley, Texas, USA, March.

Ingo Arndt / Two Christmas Island Frigatebirds (Fregata andrewsi) playing / interacting in flight, These birds are critically endangered, and endemic to Christmas Island. Christmas Island, Indian Ocean, Australian...

Ingo Arndt / Two Christmas Island Frigatebirds (Fregata andrewsi) playing / interacting in flight, These birds are critically endangered, and endemic to Christmas Island. Christmas Island, Indian Ocean, Australian...

Ingo Arndt / African Lion (Panthera leo) female interacting with juvenile, Masai Mara National Reserve, Kenya, Africa

Marie Read / Northern cardinal (Cardinalis cardinalis) male (right) feeding his mate in spring as part of courtship/pair formation, termed "allofeeding", New York, USA, May.

Marie Read / Northern cardinal (Cardinalis cardinalis) male (right) feeding his mate in spring as part of courtship/pair formation, termed "allofeeding", New York, USA, May.

Marie Read / Northern cardinal (Cardinalis cardinalis) male (right) feeding his mate in spring as part of courtship/pair formation, termed "allofeeding", New York, USA, May.

Markus Varesvuo / Osprey (Pandion haliaetus) perched interacting with two Hooded crows {Corvus corone corvix} Vaala, Finland, June

Ammonite / Two juvenile Sri Lankan elephants (Elephas maximus maximus) interacting with trunks, Yala National Park, Sri Lanka.

Ammonite / Group of juvenile White-faced / White-throated capuchins (Cebus capucinus) resting and interacting in tree, Santa Rosa National Park, Costa Rica.

Jabruson Motion / THIS VIDEO CLIP WILL BE AVAILABLE TO VIEW ONLINE SOON. TO VIEW NOW, PLEASE CONTACT US. - African forest elephant (Loxodonta africana cyclotis) family at a mineral dig, interacting with trunks, Bai Hok...

Jabruson Motion / Two African forest elephants (Loxodonta africana cyclotis) interacting over access to a mineral pool in a clearing, Dzanga-Ndoki National Park, Sangha-Mbaere Prefecture, Central African Republic

Jabruson Motion / Juvenile African forest elephant (Loxodonta africana cyclotis) at a mineral dig, with a second calf entering the frame and interacting with trunks, Zanga-Ndoki National Park, Sangha-Mbaere Prefecture,...

Jabruson Motion / Group of African forest elephants (Loxodonta africana cyclotis) feeding, drinking and interacting at a mineral pool, Dzanga-Ndoki National Park, Sangha-Mbaere Prefecture, Central African Republic

Will Burrard-Lucas / African lionness (Panthera leo) interacting with cub, South Luangwa National Park, Zambia. September.

Frederique Olivier / Two Emperor penguins (Aptenodytes forsteri) with chicks interacting, Antarctica, August.

Frederique Olivier / Two Emperor penguins (Aptenodytes forsteri) interacting, both with chicks, Antarctica, August.

Frederique Olivier / Two Emperor penguin (Aptenodytes forsteri) chicks interacting, Antarctica, September.

Terry Whittaker / Two Razorbills (Alca torda) interacting, Latrabjarg, Iceland, July.

Lou Coetzer / Female Hippopotamus (Hippopotamus amphibius) interacting with calf, Chobe River, Botswana, Vulnerable species.

Lou Coetzer / Two Marabou storks (Leptoptilos crumeniferus) interacting in flight, Chobe River, Botswana, November.

Lou Coetzer / Two bull African elephants (Loxodonta africana) interacting in water before sunset, Chobe River, Botswana, July, Vulnerable species.

Will Burrard-Lucas / Meerkat (Suricata suricatta) young interacting with adult, Makgadikgadi Pans, Botswana.

Aflo / Okapis (Okapia johnstoni) interacting, Democratic Republic of the Congo, Central Africa.

Angelo Gandolfi / Dusky-legged guans (Penelope obscura) interacting, Parque do Caraca, Minas Gerais, Brazil.

Laurent Geslin / European grey wolf {Canis lupus} pair in snow, interacting, captive, Switzerland, February

Laurent Geslin / Rock dove / Feral pigeon (Columba livia) pair interacting, London, UK

Laurent Geslin / Australian sealion (Neophoca cinerea) two females interacting on sandy beach, Kangaroo Island, South Australia

Laurent Geslin / Red fox (Vulpes vulpes) snarling at / interacting with another fox, UK

Laurent Geslin / Simien jackal group interacting {Canis simensis} Bale Mts NP, Ethiopia, 2004

Laurent Geslin / Simien jackal group interacting {Canis simensis} Bale Mts NP, Ethiopia, 2004

Laurent Geslin / Simien jackal group interacting {Canis simensis} Bale Mts NP, Ethiopia, 2004

Laurent Geslin / Simien jackal group interacting {Canis simensis} Bale Mts NP, Ethiopia, 2004

Laurent Geslin / Simien jackal group interacting {Canis simensis} Bale Mts NP, Ethiopia, 2004

Laurent Geslin / Simien jackal group interacting {Canis simensis} Bale Mts NP, Ethiopia, 2004

Laurent Geslin / Simien jackal group interacting {Canis simensis} Bale Mts NP, Ethiopia, 2004

Steven Kazlowski / Polar bear (Ursus maritimus) female with juvenile interacting on the newly frozen pack ice, Beaufort Sea, off the 1002 area of the Arctic National Wildlife Refuge, North Slope, Alaska

Eric Baccega / Couple of common hamster (Cricetus cricetus) interacting during breeding season in a captive breeding program, at the Association 'Sauvegarde Faune Sauvage d'Alsace' (Preserving the wildlife of Alsace...

Staffan Widstrand / Wild Wonders of China / Yunnan Snub-nosed monkey (Rhinopithecus bieti) young ones interacting, Ta Chen NP, Yunnan province, China

Staffan Widstrand / Wild Wonders of China / Yunnan Snub-nosed monkeys (Rhinopithecus bieti) interacting, Ta Chen NP, Yunnan province, China

Igor Shpilenok / Kamchatka Brown Bears (Ursus arctos beringianus) interacting. Kronotsky Zapovednik Nature Reserve, Kamchatka Peninsula, Russian Far East, July.

Franco Banfi / Guest interacting with Siberian Husky dogs used for sledding inside Riisitunturi National Park, Lapland, Finland

Franco Banfi / Guest interacting with Siberian Husky used as sled dog inside Riisitunturi National Park, Lapland, Finland

Peter Cairns / 2020VISION / Two Arctic terns (Sterna paradisaea) interacting in flight, Shetland Isles, Scotland, UK, June.

Wild Wonders of Europe / Muñoz / Common ravens (Corvus corax) two interacting, Campanarios de Azaba Biological Reserve, a rewilding Europe area, Salamanca, Castilla y Leon, Spain

Tony Heald / African Wild Dog (Lycaon pictus) pack interacting with African elephant (Loxodonta africana) Mana Pools National Park, Zimbabwe, October 2012

Tony Heald / African Wild Dog (Lycaon pictus) pack interacting with African elephants (Loxodonta africana) Mana Pools National Park, Zimbabwe, October 2012

Mark Carwardine / Amazon / pink river dolphin / boto (Inia geoffrensis) Rio Negro, Brazil (Amazon) wild animal interacting with local villager, Threatened species (IUCN Red List)

Tui De Roy / Blue-footed Booby (Sula nebouxii) displaying on rock with another watching and interacting. Espanola Island, Galapagos, May.

Tui De Roy / American flamingo (Phoenicopterus ruber) by water, interacting in social behviour. Floreana Island, Galapagos, Ecuador, June.

Anup Shah / African lions (Panthera leo) sub-adult male lions interacting, Masai Mara National Reserve, Kenya, September

Charlie Summers / Grants zebra (Equus quagga) two individuals interacting, Ngorongoro Crater, Tanzania

Carol Walker / Two white horses of the Camargue, interacting on marshes, Camargue, Southern France

Carol Walker / Two white horses of the Camargue, interacting at water, Camargue, Southern France

Carol Walker / Wild horse / Mustang, three horses interacting in play, Pryor mountains, Montana, USA, July 2011

Carol Walker / Wild horse / Mustang, two stallions interacting, one chasing the other away, Pryor mountains, Montana, USA

Carol Walker / Mustangs / wild horses, black and cremello interacting, Pryor mountains, Montana, USA

Carol Walker / Wild horses / Mustangs, two foals interacting, McCullough Peaks, Wyoming, USA

Mark Hamblin / 2020VISION / White-tailed Eagle (Haliaeetus albicilla) adult interacting with chick at nest. Wester Ross, Scotland, June.

Mark Hamblin / 2020VISION / Snow Bunting (Plectrophenax nivalis) in winter plumage in snow, interacting. Cairngorms National Park, Scotland, UK, January.

Mark Hamblin / 2020VISION / Snow Bunting (Plectrophenax nivalis) in winter plumage in snow, interacting. Cairngorms National Park, Scotland, UK, January.

Claudio Contreras / Turkey Vulture (Cathartes aura) interacting with Crested Caracara (Caracara plancus). Maria Madre Island, Islas Marias Biosphere Reserve, Sea of Cortez (Gulf of California), Mexico, September.

Roland Seitre / Princess Parrots (Polytelis alexandrae) interacting. Neale Junction Nature Reserve, Western Australia, September.

Roland Seitre / Vincent Dethier, reserve director at Fathala, interacting with tame Spotted Hyaenas (Crocuta crocuta). Toubacouta, Senegal.

Roland Seitre / Woman interacting with tame Roan Antelope (Hippotragus equinus). Toubacouta, Senegal.

Roland Seitre / Woman interacting with tame Roan Antelope (Hippotragus equinus). Toubacouta, Senegal.

Roland Seitre / Woman interacting with tame Roan Antelope (Hippotragus equinus). Toubacouta, Senegal.

Roland Seitre / Great Green / Buffon's Macaw (Ara ambiguus) interacting on branch. Boca Tapada, Biological Corridor San Juan La Selva, Costa Rica. 2008.

Roland Seitre / Judy Avey-Arroyo, sloth refuge owner, interacting with Hoffmann's Two Toed Sloth (Choloepus hoffmanni) Aviarios del Caribe Sloth Refuge, Costa Rica, 2008.

Loic Poidevin / Two Grey squirrels (Sciurus carolinensis) interacting, Quebec, Canada, March